I am just beginning the process of getting my first silencer, for 22lr.

If all goes smoothly, I will probably get hooked and want to silence other stuff. I got to thinking, what happens when you fire a 9mm round through a silencer designed for 45ACP?

OBVIOUSLY! You should never ever ever fire a .223 out of a silencer designed for 22lr. The blast is very very different and the silencer would....as the dealer selling me the silencer told me when I asked him to make sure....turn into a grenade.

But a 45 is big, and the delta between 9mm velocity vs. 45 velocity is only about 200-300fps.

What would happen?

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Originally Posted By TheRedHorseman:I think you'd be just fine shooting a 9mm through a .45 can. it just wouldnt be as quiet

That's what I was thinking. Getting a 45ACP can would be a cheap way to silence the 45's, the 40's the 9mm's. Not perfect, but not bad if on a budget.

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AFAIK, it will supress the report, but not as well as a 9mm can would. You can always use a can on a smaller caliber round without risk of harm, unless, say, you get a 9mm Luger (pistol) can and throw it on a.. say... 338 Lapua Mag... the pressure might be too much and harm the baffles.

Originally Posted By Matthew_Q:AFAIK, it will supress the report, but not as well as a 9mm can would. You can always use a can on a smaller caliber round without risk of harm, unless, say, you get a 9mm Luger (pistol) can and throw it on a.. say... 338 Lapua Mag... the pressure might be too much and harm the baffles.

I'ld have thought it would be more than slightly louder as you not only have more clearance but most 9mm rounds are super or trans-sonic and 45s are subsonic, you would also have the "sonic boom" to contend with.

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After reading up on how loud some of the 45acp silencers are I doubt I will head that route. The 9mm subsonic can get very quiet and I want something that is nice to use with no hearing protection.

Over in the nfa forum of this site someone has lots of measurements for how loud a silencer happens to be. There are links to a site with the measurements.

In one discussion someone said that running a 308 bullet through one companies 308 silencer was X. It then was mentioned that running a 308 bullet through that companies 338 lapua silencer was also just about X. The lapua silencer was 2 inches longer and maybe a bit bigger around, I forget. Anyway, there is more to what makes a silencer work than how well the bullet fits the hole in the silencer.

For best results you should of course consider going with a silencer for each round, but that gets expensive.

And if you have a handgun that takes aftermarket barrels, like a glock 40s&w and you want to use the 9mm aftermarket barrel in that gun, you have some versatility.

The biggest thing to keep in mind is that you have to be able to fit the silencer to the gun and there was some discussion about that being a problem if you want to use one silencer on several guns. If you are using aftermarket barrels in the gun then the outer diameter is the same. If using several different types of handguns the outer diameter may not be the same.

The only problem with reading up on silencers is that I am not interested in one of the 44mag bolt guns a couple make. They are quiet and very accurate. I think it would be great to not bother the neighbors while shooting.

Wet or dry there is absolutely no need for hearing protection. It is very quiet, especially out in the country where there are not a lot of obstructions. If I shoot the can wet, and I am out in a field with no trees or hills for miles, all you hear is the slide movement, the brass hit the ground and the impact of the bullet.

Originally Posted By PaDanby:I'ld have thought it would be more than slightly louder as you not only have more clearance but most 9mm rounds are super or trans-sonic and 45s are subsonic, you would also have the "sonic boom" to contend with.

Originally Posted By TheRedHorseman:I think you'd be just fine shooting a 9mm through a .45 can. it just wouldnt be as quiet

That's what I was thinking. Getting a 45ACP can would be a cheap way to silence the 45's, the 40's the 9mm's. Not perfect, but not bad if on a budget.

You are gonna run into the issue of proprietary silencers. In other words the diameter of the threads on a .45 barrel will be very different from those of a .40 or 9mm. Cans are pretty cheap, just buy the right ones.

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Originally Posted By SteyrAUG:Cans are pretty cheap, just buy the right ones.

Cheap compared to what? Entry price is at least $350 ($150 + $200 tax). That's one whole used Glock, or 2 cases of ammo, or 50 pizzas. Either way that ain't cheap in my book.

It is "poor man's Class 3" though, which is why I bought my .223 can. That's also why unless I hit the lottery I'll never actually buy a machine gun--I can get pretty much every gun and gun accessory I every wanted for the price of one M16 (and I'm working on satisfying that list ). But it still ain't cheap.

Originally Posted By SteyrAUG:Cans are pretty cheap, just buy the right ones.

Cheap compared to what? Entry price is at least $350 ($150 + $200 tax). That's one whole used Glock, or 2 cases of ammo, or 50 pizzas. Either way that ain't cheap in my book.

It is "poor man's Class 3" though, which is why I bought my .223 can. That's also why unless I hit the lottery I'll never actually buy a machine gun--I can get pretty much every gun and gun accessory I every wanted for the price of one M16 (and I'm working on satisfying that list ). But it still ain't cheap.

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Pretty cheap as far as NFA items go.

The Founding Fathers On Porn.

Ben Franklin would have read Hustler. Thomas Jefferson would have read Players.